[Experiment] feat: add @primer/cli

[joshblack]

Ideas that I'm exploring

• components
  • Query for components
  • Query for component info, including:
    • Docs
    • Source
    • Stories
    • Tests (VRT, unit)
    • Specs?
    • Figma info
  • Allow for loading components from source so that skills using the cli work with foreign components

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Latest commit: 382f498

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